Type 293

The Type 293 is an operating in
S-Band
surveillance and target designation radar.
The radar is equipped with a so called “cheese antenna” forming a
fan-beam antenna pattern.
It acquired that name because it looked like a block of cheese cut in half.

The Type 293 radar system first saw service in 1944 with a 6 foot antenna (6 ft × 4 in ≙ 4° × 35°).
The rotation rate was 15 rpm and the pulse length 1.5 µs at a
PRF
of 500 Hz.
Type 293M, which incorporated an 8 foot antenna (8 ft × 7.5 in ≙ 3° × 30°).
It was introduced into service in 1945 and provided a maximum range of
15 NM (≙ 28 km).
Type 293P was similar to the previous model but it was modified for easier maintenance.
A post-war radar program introduced in early 1960s the Type 293Q set with a redesigned 12 foot antenna
(12 ft × 7.5 in ≙ 2° × 30°).[1]
In the Swedish Royal Navy this radar got the designator P-234.

Sources and ressorces:

F.A. Kingsley: ''The Applications of Radar and Other Electronic Systems in the Royal Navy in World War 2'' Springer, 2016, ISBN 9781349136230 p. 26
(online preview)